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30534983 = 194915667
BaseRepresentation
bin111010001111…
…0110101000111
32010110100010022
41310132311013
530304104413
63010245355
7520354163
oct164366507
963410108
1030534983
1116266426
12a28685b
13643164b
1440abca3
152a32608
hex1d1ed47

30534983 has 4 divisors (see below), whose sum is σ = 30552600. Its totient is φ = 30517368.

The previous prime is 30534967. The next prime is 30534989. The reversal of 30534983 is 38943503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38943503 = 41119473.

It is a cyclic number.

It is not a de Polignac number, because 30534983 - 24 = 30534967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30534989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5885 + ... + 9782.

It is an arithmetic number, because the mean of its divisors is an integer number (7638150).

Almost surely, 230534983 is an apocalyptic number.

30534983 is a deficient number, since it is larger than the sum of its proper divisors (17617).

30534983 is a wasteful number, since it uses less digits than its factorization.

30534983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 30534983 is about 5525.8468129328. The cubic root of 30534983 is about 312.5593973495.

The spelling of 30534983 in words is "thirty million, five hundred thirty-four thousand, nine hundred eighty-three".

Divisors: 1 1949 15667 30534983